FcAtomicLock (3) - Linux Manuals
FcAtomicLock: lock a file
NAME
FcAtomicLock - lock a file
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcAtomicLock (FcAtomic *atomic);
DESCRIPTION
Attempts to lock the file referenced by atomic. Returns FcFalse if the file is already locked, else returns FcTrue and leaves the file locked.